Raw butadiene-styrene rubber, polymerized in emulsion. Determination of bound styrene content. Refractive index method

This document outlines a technical specification designed to determine the combined styrene content in non-emulsion polymerized styrene-butadiene rubber using the refractive index method. The procedure establishes a standardized analytical approach for assessing the chemical composition of this specific type of synthetic elastomer. By utilizing optical properties measured through refractive index, the method provides a reliable means to quantify the styrene component within the polymer matrix. The scope covers the necessary experimental conditions, measurement techniques, and calculation procedures required to obtain accurate results. This technical framework ensures consistency and comparability of test data across different laboratories and industrial applications. It focuses specifically on the characterization of the rubber material without addressing formulation or processing variables. The guidelines presented here serve as a reference for quality control and product certification processes within the relevant industry sectors. The methodology described is intended to facilitate the uniform assessment of material properties in a manner that aligns with established international practices.